US4188139A - Method and apparatus for correctably printing characters with sublimable ink - Google Patents

Method and apparatus for correctably printing characters with sublimable ink Download PDF

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Publication number
US4188139A
US4188139A US05/794,514 US79451477A US4188139A US 4188139 A US4188139 A US 4188139A US 79451477 A US79451477 A US 79451477A US 4188139 A US4188139 A US 4188139A
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US
United States
Prior art keywords
characters
printing
ink
erased
coloring agents
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Expired - Lifetime
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US05/794,514
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English (en)
Inventor
Arnaldo Pasini
Claudio Dalmasso
Riccardo Brescia
Roberto Bosio
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Telecom Italia SpA
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Ing C Olivetti and C SpA
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Application filed by Ing C Olivetti and C SpA filed Critical Ing C Olivetti and C SpA
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
    • G01D15/005—Effaceable recording
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/26—Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0009—Obliterating the printed matter; Non-destructive removal of the ink pattern, e.g. for repetitive use of the support
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment

Definitions

  • the invention relates to a method and apparatus for printing characters which can be easily erased for correction purposes.
  • the main object of the present invention is a printing method and apparatus allowing an easy and complete erasure of the printing errors.
  • FIG. 1 shows a plane view of a printer according to the invention
  • FIG. 2 is a lateral view of a detail of the printer of FIG. 1;
  • FIG. 3 shows another embodiment of the erasing means
  • FIG. 4 shows another embodiment of the erasing means
  • FIG. 5 is a variant of the embodiment of FIG. 4;
  • FIG. 6 is a block diagram of the embodiment of FIG. 1;
  • FIG. 7 is a schematic view of another printer according to the invention.
  • FIG. 8 shows an embodiment of the erasing means for the printer of FIG. 7;
  • FIG. 9 is a schematic view of another printer according to the invention.
  • FIG. 10 shows another embodiment of the erasing means.
  • the method for erasably printing characters is based on the use of a printing ink containing coloring agents that can be sublimated at low temperature, allowing the erasure of the printed characters by heating the printed paper sheet at a temperature lower than the burning or darkening temperature of the paper.
  • FIGS. 1 and 2 An example of a preferred embodiment of erasably printing characters is illustrated in FIGS. 1 and 2, wherein the characters are traced by a printing point 11, which is driven in the X and Y directions by two moving coil electromagnets 12 and 13, and pushed in the Z direction against the paper 24 inserted on platen 14 by a third electromagnet 15, in a known manner.
  • the printing point 11 and the driving electromagnets 12, 13, 15 are carried by a carriage 19, which is transversely movable step by step in an advancing direction with respect to the paper platen 14.
  • a back spacing mechanism not shown in also operable to back space the carriage 19 in a known manner.
  • the printing point 11 is a ball point pen supplied with a special ink containing sublimable agents contained in a pressurized reservoir 16.
  • the preferred coloring agents suitable for the preparation of the ink belong to the class of anthraquinones; other suitable agents belong to the classes of azo, quinophtalone, azomethynes, stylbenes, nytrodiarylamines, acridines, xanthones, diazines. All these coloring agents have a temperature of sublimation, which is substantially lower than the temperature of darkening the paper 24.
  • the ink erasable To render the ink erasable, it is however necessary that it does not penetrate too deeply into the paper 24 during the writing, so that the heat can reach it easily and cause its sublimation.
  • the ink solvents like water and organic solvents, as alcohols and glycols.
  • the inks so obtained are very fluent, dry in a short time, and ensure a good writing with a constant color density.
  • the erasing characteristics can be increased by the use of additives with low sublimating temperature like lauric acid, camphor, naphtalene, that help to remove the coloring agent during the erasure of the printing.
  • a nozzle 17 secured to the printing point 11 closely below same, is a nozzle 17 terminating very close to it, but slightly retracted.
  • the nozzle 17 can direct a stream of hot air onto the printing position 25 following the movement of the printing point 11 without actually touching the paper 24.
  • the nozzle 17 receives the air stream generated by a blower 34 (FIG. 6) through a flexible pipe 18, which can follow the movements of the carriage 19 (FIG. 1) carrying the printing point 11.
  • the air is heated to a temperature of approximately 180° C. when passing in contact with heater 35 contained in a section 20 (FIG. 2) close to the extremity of the nozzle 17.
  • the procedure for erasing a character is determined by the arrangement schematically indicated in FIG. 6, where 31 is a keyboard whose input is detected by a keyboard encoder 32 including a coding circuit whose outputs are connected to the X, Y, and Z actuating circuits 36, 37, 38 driving the X, Y and Z printing electromagnets 12, 13 and 15 that determine the printing of the character by the printing point 11, and to an actuating circuit 39 determining the movement of the carriage 19.
  • the printing carriage 19 When a character has to be erased, the printing carriage 19 is positioned in the printing position 25 (FIG. 1) corresponding to the character to be erased, then a correcting key (not shown) of the keyboard 31 is depressed. Immediately thereafter the key of the character that has to be erased is depressed. The depression of the correcting key activates a correction circuit 33 which, in turn, activates the blower 34 feeding the flexible pipe 18 and the heater 35 contained in section 20 of FIG. 1, so feeding the nozzle 17 with hot air, and at the same time temporarily prevents the Z actuating circuit 38 from driving the Z electromagnet 15.
  • the printing point 11 is prevented from touching the paper 24, while a thin stream of hot air is precisely directed onto the character to be erased, following exactly the same path followed by the printing point 11 during the printing of the character and causing its complete disappearance.
  • the blower 34 and heater 35 are turned off. Because of the very short duration of the erasing operation, the hot air causes to appreciable darkening of the paper 24. A new character can now be printed without delay over the erased character.
  • the same correcting key can operate the back spacing mechanism to automatically return the last printed character on the printing position for erasure.
  • the sublimable coloring agent is constituted by Resirenblau, produced by the firm Bayer, in normal use for the transfer printing of synthetic fabrics by means of sublimation procedures.
  • the coloring agent has been purified by means of sublimation.
  • the so purified agent has been finely ground adding percentages up to 25% of biners belonging to the classes of ethylcellulosic, ketonic, phenolic, acrylic resins intended to limit the penetration of the ink into the paper.
  • FIGS. 3, 4, 5 and 10 Other embodiments for the erasing means are illustrated in FIGS. 3, 4, 5 and 10.
  • the heat required to cause the sublimation of the coloring agent of the printed character 41 to be erased is provided by a lamp 43 with a reflector 44, whose radiant energy is concentrated upon said character 41 by a lens 42.
  • the lamp 43 is energized only when a character 41 has to be erased; being dark in color, the character 41 heats much more than the paper 24 on which it is printed, so favoring the sublimation of the coloring agent.
  • the erasing is operated by a hot air stream directed by the nozzle 51 of a pipe 54 onto the erasing position and covering the entire surface of the character 53 to be erased.
  • an asbestos tape 52 is interposed between the nozzle 51 of the pipe 54 and the paper 24, in order to adsorb the sublimated color to prevent its condensation over the paper 24.
  • the erasure is accomplished by an electromagnet 91 that presses for a short time against the character 92 to be erased a metallic element 93, heated by a resistor 94, having a surface sufficient to completely cover the characters 92 to be erased.
  • FIGS. 7, 8 and 9 Other possible embodiments for erasably printing characters are schematically illustrated in FIGS. 7, 8 and 9.
  • FIG. 7 refers to a wheel printer of a known type, where the inking of the printing characters 61 of the printing wheel 62 is provided by an inking roller 63 impregnated with an ink according to the invention, containing sublimable coloring agents, where the aqueous vehicles are replaced by resins, waxes, oils, etc.
  • the inking roller 63 of FIG. 7 is substituted by a transfer ribbon 70, impregnated with the above mentioned ink containing easily sublimable coloring agents, interposed between a printing character 61 and the paper 24.
  • the embodiments for erasably printing characters are valid for any type of impact printer, using wheel, ball or hammers.
  • FIGS. 3, 4, 5 and 10 also apply to the embodiments for erasably printing characters of FIGS. 7 and 9.
  • a more specific erasing embodiment suitable for the printers of FIGS. 7 and 9 is shown in FIG. 8, where a hot air stream is directed by a nozzle 65 directly onto the printing position 64, while the wheel 62 is positioned on the position 67 (FIG. 7) having no printing characters, causing the erasure of the printed characters.
  • the transfer ribbon 70 is lowered to a rest position indicated in FIG. 9 as 71.
  • the hot air stream emanating from the nozzle 17 of FIG. 2 is substituted by a hot point touching the paper and causing the sublimation of the coloring agents of the printed character by the same movements followed during the printing.
  • the printing point 11 of FIG. 1 is an ink jet printer nozzle ejecting droplets or mist or vapour of an ink according to the invention containing easily sublimable coloring agents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Printing Methods (AREA)
  • Duplication Or Marking (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
US05/794,514 1976-05-10 1977-05-06 Method and apparatus for correctably printing characters with sublimable ink Expired - Lifetime US4188139A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT68142/76A IT1072323B (it) 1976-05-10 1976-05-10 Inchiostro per dispositivi di scrittura
IT68142A/76 1976-05-10

Publications (1)

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US4188139A true US4188139A (en) 1980-02-12

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US (1) US4188139A (it)
JP (1) JPS52146309A (it)
DE (1) DE2721490A1 (it)
IT (1) IT1072323B (it)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567076A1 (fr) * 1984-07-07 1986-01-10 Heidelberger Druckmasch Ag Procede pour la realisation d'exemplaires uniques d'une impression
US4957312A (en) * 1989-12-07 1990-09-18 Peter S. Morello Sales records
US5251989A (en) * 1992-08-10 1993-10-12 Eugene Di Luco Apparatus for making a multi-colored printing ribbon
US5290346A (en) * 1991-08-28 1994-03-01 Brother Kogyo Kabushiki Kaisha Ink for printer
EP0614071A1 (de) * 1993-03-02 1994-09-07 Willi Naumann Vorrichtung zum Auszeichnen von CAD-Zeichnungen
US5447333A (en) * 1993-08-12 1995-09-05 Avant, Incorporated Method of producing a laminated wrinkle-free presentation folder having perfect binding sheets
US5489158A (en) * 1990-01-05 1996-02-06 Symbol Technologies, Inc. Printer system for removable machine readable code
US5825402A (en) * 1993-03-26 1998-10-20 Symbol Technologies, Inc. Method and appratus for reading and writing indicia such as bar codes using a scanned laser beam
US6386671B1 (en) 1999-12-29 2002-05-14 Hewlett-Packard Company Orientation independent indicia for print media
US6644764B2 (en) 1998-10-28 2003-11-11 Hewlett-Packard Development Company, L.P. Integrated printing/scanning system using invisible ink for document tracking
US20030213848A1 (en) * 1992-05-01 2003-11-20 Huston Craig S. Tape indicia on clear film media
US6871786B1 (en) 1993-03-26 2005-03-29 Symbol Technologies, Inc. Method and apparatus for reading and writing indicia such as bar codes using a scanned laser
US6969549B1 (en) 1999-11-19 2005-11-29 Hewlett-Packard Development Company, L.P. Techniques to prevent leakage of fluorescing signals through print media or indicia tape
DE102005037497A1 (de) * 2005-08-09 2007-02-15 Man Roland Druckmaschinen Ag Kennzeichnungssystem und Qualitäts- und Kennzeichnungsverfahren für eine Bogendruckmaschine
US20110064337A1 (en) * 2009-09-14 2011-03-17 ACCO Brands Corporation Laminating material and method of manufacturing
US10953646B2 (en) 2018-10-26 2021-03-23 ACCO Brands Corporation Laminating system with coded film cartridge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010377C2 (de) * 1980-03-18 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Anordnung zum Löschen von Zeichen
JPS5820487A (ja) * 1981-07-29 1983-02-05 Tokyo Electric Co Ltd インクロ−ル式シリアルプリンタ

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US2755202A (en) * 1954-02-03 1956-07-17 Du Pont Stabilized coloring compositions and methods of making and using same
US2950256A (en) * 1955-11-09 1960-08-23 Ncr Co Readily removable marking composition for record material
GB964416A (en) * 1960-05-02 1964-07-22 Caribonum Ltd Improvements in or relating to inked ribbons
US3237748A (en) * 1964-06-16 1966-03-01 Arnold S Rifkin Typewriter eraser
US3414417A (en) * 1966-08-18 1968-12-03 Ibm Screening inks with sublimable solids
US3464534A (en) * 1966-03-21 1969-09-02 Hrand M Muncheryan Laser eraser
US3519456A (en) * 1964-02-04 1970-07-07 Letraset International Ltd Transfer materials
US3553421A (en) * 1968-11-07 1971-01-05 Arthur L Schawlow Method of and apparatus for erasing
US3741995A (en) * 1970-04-03 1973-06-26 Ciba Geigy Ag Anthraquinone pigments
US3781279A (en) * 1971-02-23 1973-12-25 Sterling Drug Inc Stilbene optical brighteners
US3786907A (en) * 1971-09-22 1974-01-22 H Muncheryan Laser eraser for a typewriter
US3799316A (en) * 1970-12-30 1974-03-26 Ibm Automatic erase mechanism
US3831727A (en) * 1972-11-21 1974-08-27 Ibm Pressurizing system for ink jet printing apparatus
DE2427092A1 (de) * 1974-06-05 1975-12-18 Max Dipl Ing Bunke Schreibmaschine
US3989131A (en) * 1974-02-18 1976-11-02 Ing. C. Olivetti & C., S.P.A. Electrothermal printing unit
US4003459A (en) * 1973-11-28 1977-01-18 Robert Adolphus Guy Moffatt Writing machines
US4042545A (en) * 1974-06-13 1977-08-16 Ciba-Geigy Ag Novel printing inks for sublimation transfer printing
US4062644A (en) * 1976-03-30 1977-12-13 Graphic Magicians, Inc. Transfer ink and method of using same

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US2755202A (en) * 1954-02-03 1956-07-17 Du Pont Stabilized coloring compositions and methods of making and using same
US2950256A (en) * 1955-11-09 1960-08-23 Ncr Co Readily removable marking composition for record material
GB964416A (en) * 1960-05-02 1964-07-22 Caribonum Ltd Improvements in or relating to inked ribbons
US3519456A (en) * 1964-02-04 1970-07-07 Letraset International Ltd Transfer materials
US3237748A (en) * 1964-06-16 1966-03-01 Arnold S Rifkin Typewriter eraser
US3464534A (en) * 1966-03-21 1969-09-02 Hrand M Muncheryan Laser eraser
US3414417A (en) * 1966-08-18 1968-12-03 Ibm Screening inks with sublimable solids
US3553421A (en) * 1968-11-07 1971-01-05 Arthur L Schawlow Method of and apparatus for erasing
US3741995A (en) * 1970-04-03 1973-06-26 Ciba Geigy Ag Anthraquinone pigments
US3799316A (en) * 1970-12-30 1974-03-26 Ibm Automatic erase mechanism
US3781279A (en) * 1971-02-23 1973-12-25 Sterling Drug Inc Stilbene optical brighteners
US3786907A (en) * 1971-09-22 1974-01-22 H Muncheryan Laser eraser for a typewriter
US3831727A (en) * 1972-11-21 1974-08-27 Ibm Pressurizing system for ink jet printing apparatus
US4003459A (en) * 1973-11-28 1977-01-18 Robert Adolphus Guy Moffatt Writing machines
US3989131A (en) * 1974-02-18 1976-11-02 Ing. C. Olivetti & C., S.P.A. Electrothermal printing unit
DE2427092A1 (de) * 1974-06-05 1975-12-18 Max Dipl Ing Bunke Schreibmaschine
US4042545A (en) * 1974-06-13 1977-08-16 Ciba-Geigy Ag Novel printing inks for sublimation transfer printing
US4062644A (en) * 1976-03-30 1977-12-13 Graphic Magicians, Inc. Transfer ink and method of using same

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567076A1 (fr) * 1984-07-07 1986-01-10 Heidelberger Druckmasch Ag Procede pour la realisation d'exemplaires uniques d'une impression
US4957312A (en) * 1989-12-07 1990-09-18 Peter S. Morello Sales records
US5880453A (en) * 1990-01-05 1999-03-09 Symbol Technologies, Inc. Reader system for removable two dimensional code
US5489158A (en) * 1990-01-05 1996-02-06 Symbol Technologies, Inc. Printer system for removable machine readable code
US5290346A (en) * 1991-08-28 1994-03-01 Brother Kogyo Kabushiki Kaisha Ink for printer
US6766953B1 (en) 1992-05-01 2004-07-27 Hewlett-Packard Development Company, L.P. Tape indicia on clear film media
US6994254B2 (en) 1992-05-01 2006-02-07 Hewlett-Packard Development Company, L.P. Tape indicia on clear film media
US20030213848A1 (en) * 1992-05-01 2003-11-20 Huston Craig S. Tape indicia on clear film media
US5251989A (en) * 1992-08-10 1993-10-12 Eugene Di Luco Apparatus for making a multi-colored printing ribbon
EP0614071A1 (de) * 1993-03-02 1994-09-07 Willi Naumann Vorrichtung zum Auszeichnen von CAD-Zeichnungen
US5825402A (en) * 1993-03-26 1998-10-20 Symbol Technologies, Inc. Method and appratus for reading and writing indicia such as bar codes using a scanned laser beam
US6533174B2 (en) 1993-03-26 2003-03-18 Symbol Technologies, Inc. Method and apparatus for reading and writing indicia such as bar codes using a scanned laser beam
US6871786B1 (en) 1993-03-26 2005-03-29 Symbol Technologies, Inc. Method and apparatus for reading and writing indicia such as bar codes using a scanned laser
US5447333A (en) * 1993-08-12 1995-09-05 Avant, Incorporated Method of producing a laminated wrinkle-free presentation folder having perfect binding sheets
US6644764B2 (en) 1998-10-28 2003-11-11 Hewlett-Packard Development Company, L.P. Integrated printing/scanning system using invisible ink for document tracking
US6969549B1 (en) 1999-11-19 2005-11-29 Hewlett-Packard Development Company, L.P. Techniques to prevent leakage of fluorescing signals through print media or indicia tape
US6386671B1 (en) 1999-12-29 2002-05-14 Hewlett-Packard Company Orientation independent indicia for print media
DE102005037497A1 (de) * 2005-08-09 2007-02-15 Man Roland Druckmaschinen Ag Kennzeichnungssystem und Qualitäts- und Kennzeichnungsverfahren für eine Bogendruckmaschine
US20110064337A1 (en) * 2009-09-14 2011-03-17 ACCO Brands Corporation Laminating material and method of manufacturing
US9669612B2 (en) * 2009-09-14 2017-06-06 ACCO Brands Corporation Laminating material and method of manufacturing
US10953646B2 (en) 2018-10-26 2021-03-23 ACCO Brands Corporation Laminating system with coded film cartridge

Also Published As

Publication number Publication date
JPS52146309A (en) 1977-12-06
DE2721490A1 (de) 1977-12-01
JPS6113995B2 (it) 1986-04-16
IT1072323B (it) 1985-04-10

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